From d7b0a23d81507deb095859250cd7dd4aa5d8875e Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 8 Jan 2020 15:10:02 -0800 Subject: [PATCH] f2fs: update f2fs document regarding to fsync_mode This patch adds missing fsync_mode entry in f2fs document. Fixes: 04485987f053 ("f2fs: introduce async IPU policy") Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- Documentation/filesystems/f2fs.txt | 3 ++- fs/f2fs/segment.h | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index b80a7b6..ee61ace 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -334,7 +334,8 @@ Files in /sys/fs/f2fs/ updates in f2fs. User can set: 0x01: F2FS_IPU_FORCE, 0x02: F2FS_IPU_SSR, 0x04: F2FS_IPU_UTIL, 0x08: F2FS_IPU_SSR_UTIL, - 0x10: F2FS_IPU_FSYNC, 0x40: F2FS_IPU_NOCACHE. + 0x10: F2FS_IPU_FSYNC, 0x20: F2FS_IPU_ASYNC, + 0x40: F2FS_IPU_NOCACHE. Refer segment.h for details. min_ipu_util This parameter controls the threshold to trigger diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 5e6cd8d..459dc39 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -607,9 +607,10 @@ static inline int utilization(struct f2fs_sb_info *sbi) * threashold, * F2FS_IPU_FSYNC - activated in fsync path only for high performance flash * storages. IPU will be triggered only if the # of dirty - * pages over min_fsync_blocks. + * pages over min_fsync_blocks. (=default option) + * F2FS_IPU_ASYNC - do IPU given by asynchronous write requests. * F2FS_IPU_NOCACHE - disable IPU bio cache. - * F2FS_IPUT_DISABLE - disable IPU. (=default option) + * F2FS_IPUT_DISABLE - disable IPU. (=default option in LFS mode) */ #define DEF_MIN_IPU_UTIL 70 #define DEF_MIN_FSYNC_BLOCKS 8 -- 2.7.4